Pokémon can have completely randomized types, abilities, and attacks.
This article covers how to find, create, and play a randomized version of Pokémon Heart Gold. What is a Pokémon Heart Gold Randomizer? Pokemon Heart Gold Randomizer Rom Download
This is the most legally sensitive part. The recommended method is to dump the ROM from your own original Pokémon HeartGold cartridge, which you can do using a device like a DS flashcart or a specialized save dumper. It’s important to emphasize that downloading ROM files from the internet occupies a legal grey area and involves significant security risks. This is the most legally sensitive part
: Randomize which creatures appear in grass, water, or caves. Trainer Teams : Randomize which creatures appear in grass, water, or caves
After downloading the Randomizer’s .zip file, extract its contents to a folder on your computer. Navigate into the folder and double-click the (Windows) or the appropriate script for your operating system to launch the application.